Quartz-mill



(No Model.) W 2 Sheets-Sheet 1.

T. 0.1VI0GLEERY. QUARTZ MILL.

No. 512,208. Patented Jan. 2,1894.

leery (No Model.) 2 Sheets-Sheet 2. T. 0. MoOLEER-Y.

QUARTZ MILL.

. tional view thereof.

THOMAS COOK MOOLEERY, OF EXETER, NEBRASKA.

QUARTZ-MILL.

SPECIFICATION forming part of Letters Patent No. 512,208, dated January 2, 1894.

Application filed March 15, 1893. Serial No. 466,121. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS COOK MoOLnE- RY, a citizen of the United States, residing at Exeter, in the county of Fillmore and State of Nebraska, have invented a new and useful Quartz-Mill, of which the following is a specification.

This invention relates to quartz mills; and it has for its object to provide certain improvements in quartz mills or crushers which not only provide for the free mil-ling of gold or silver ores, but at the same time combine amalgamating devices, whereby heavy and light particles of gold and silver can be readily collected without the use of separate and independent amalgamating devices.

To this end the main and primary object of the invention is to provide a simple, yet highly efficient and practical mill of the character noted.

With these and many other objects in view which will readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated and claimed.

In the accompanying drawings:Figure l is a perspectiveview of a quartz mill constructed in accordance with this invention. Fig. 2 is a central vertical longitudinal sec- Fig. 3 is an enlarged detail sectional view illustrating the connection of the crushing cone or pestle stem with the crank wheel. Fig. 4 is an enlarged detail in perspective of the amalgamated discharge trough and a float plate therein, showing the same connected to the screened discharge of the mortar hopper.

Referring to the accompanying drawings,

A represents a suitable base on which is firmly secured the heavy metallic grinding mortar B. The heavy metallic grinding mortar B, is constructed in a size to accommodate itself to the work required and conforms in shape to the usual shape of ordinary mortars, and is provided in the bottom thereof with a circular mercury groove or pocket 0, which is designed to contain a quantity of mercury or quicksilver, and from which lead the discharge openings D, plugged at their outer ends as at d, and providing means for the tapping of the mortar of its mercury without disturbing other parts of the machine.

The grinding mortar Bis designed to receive a lining tub E. The lining tub E, is preferably made in sections 6, which align with each other to complete a lining tub which snugly fits inside of the mortar and which can be readily removed therefrom.

The sectional lining tub E, is made of chilled iron and is provided in the bottom thereof with a series of perforations or openings F, which communicate with the mercury groove or pocket 0, in the bottom of the mortar, and which groove or pocket is inclosed at the top by the flat bottom of the lining tub, and these perforations or openings in the bottom of said lining tub are intended to allow all the gold, as it is freed from the ore during the grinding orcrushing, which will settle, to work its way into the space below the lining tub in order to unite with the mercury or quicksilver therein, and which may be subsequently collected by drawing off the said mercury or quicksilver as previously described. It will be noticed that the inner sides of the lining tub which fits the mortar snugly, are imperforate so that as the ore is crushed against the sides of the tub, the same cannot possibly pack into the mercury below, so as to flour the same, as is quite usual in mills of this type.

The upper outer edge of the mortar B, is surrounded and inclosed by the flanged metallic hopper rim G. The flanged metallic hopper rim G, is securely bolted or otherwise fastened to the mortar and is of sufficient strength so as to accommodate the heavy ore which is fed therein, so that it will be worked into the mortar and the grinding device therein, while at the same time being sufficiently high so as to provide for the flow of water and crushed ore out of the mortar, the water being led into the hopper at one side through the water supply pipe l-I.

The hopper G, is provided at a side opposite the water supply with a discharge opening H, which is inclosed by a screen I, of any suitable mesh according to the character of the ore being crushed, and which allows the water and the pulverized ore to pass therethrough and onto the amalgamating devices leading therefrom. The screen discharge or outlet of the hopper is protected from the heavy rock remaining uncrushed, by means of a parallel series of fender or guard rods J, secured inside of the hopper in front of the screen I, as clearly shown in the drawings, and the level at which the water and fine ore pass out through the screened discharge or outlet, is regulated by one or more regulating gates K. The gate or gates K, have their opposite ends fitted in the opposite guides k, secured to the flange of the hop per at opposite inner edges of the screened discharge, said gate or gates being readily removable, and of a width to adapt themselves to the function required.

Leading at an incline from the discharge opening H, and secured to the outside of the flange of the hopper rim G, is the inclined discharge trough or chute L. The discharge trough or chute L, is made of copper and is amalgamated upon its top and inner flanged sides, so as to collect the free gold running therethrough and which is being carried out by the flow of water. Connecting the opposite sides of the inclined trough or chute L, is the hinge rod M, on which is hinged one end of the amalgamated float plate N. The amalgamated float plate N, is provided at its movable end with a parallel series of down wardly curved fingers O, the fingers in one series being arranged out of line with those of the other series, so that as the ore and water flow through the trough or chute, nearly every particle of ore must necessarily come in contact with said fingers, which are amalgamated on their under side the same as the plate N, so that a great quantity of the flowing gold will be collected, while the lighter particles floating on the top of the water are collected by the body of the float plate itself under which the water and ore flow. The float plate N, is supported in a position so that the extremities of the fingers 0, will be slightly outof contact with the bottom of the trough-or chute L, by means of a transverse supporting rod 0, arranged thereunder.

Arranged to wabble inside of the mortar B, or atleast the lining tub therein, is the heavy metallic grinding cone or pestle P. The heavy metallic grinding cone or pestle P, is intended to occupy nearly the entire space within the mortar and is slightly tapered or beveled in order to allow the ore to fall therebetween and the sides of the lining tub E, during the rotary vibratory motion thereof, which may be correctly described by the term wabbling. The said grinding cone or pestle P, may be constructed in any suitable manner out of chilled iron, but is sufficiently heavy so as to easily crush the ore-containing rock within the mortar as it wabbles around therein. By reference to the drawings it will be readily seen that the grinding cone P, rolls or wabbles around on one edge on the bottom of the lining tub E, so that when it is breaking and grinding the ore on one side, it opens up a space on the opposite side to allow the fine ore to pass under the cone and also to admit new ore into such space to be crushed in its turn as the cone passes around in the mortar. The grinding cone P, is secured fast on the lower end of the cone shaft or stem p, the other end of which passes loosely through the adjustable crank sleeve or box Q. The crank sleeve or bOX Q, which loosely receives the upper end of the shaft or stem 19, is provided with the flange attachment plate (1, which is adj u'stably fitted to the top of the rotating crank wheel R. The rotating crank wheel R, is provided with a slot r, which receives the upper end of the shaft or stem 10,

and over which is adjusted the sleeve or box Q. The rotary crank wheel R, is carried upon the lower end of the vertical shaft S, and is provided with a top beveled face which is beveled on the arc of a perfect circle so that by adjusting the sleeve or box Q, the angle on which the grinding cone works can be accurately regulated and adjusted. The vertical shaft S, is mounted in suitable bearings s, at the upper end of a vertical frames, and said shaft carries at its up er end the horizontal beveled gear wheel T, which meshes with a vertical beveled gear -25, on a horizontal drive shaft 25, mounted in suitable bearings 25 on a frame 8', and carrying at one end the balance wheel U, and at its other end a band wheel or pulley V, which is adapted to receive a belt of a suitable source of power. The bearings referred to are so arranged that it is impossible for the oil used in lubricating, to find a passage into the mill, and in order to effectually secure this end, a conical oil cup W, is attached to and surrounds the shaft or stem 19, so as to catch all drippings which might tend to run down the cone or pestle shaft.

From the foregoing it is thought that the construction and many advantages of the herein-described quartz mill will be readily apparent, it being seen that, with but slight power, a powerful leverage is secured for the thorough breaking and grinding of the ore, combined with efficient means for the thorough amalgamation of floating particles of free metal.

Changes in the form, proportion and the minor details of construction as embraced within the scope of the appended claims, may beresorted to Without departing from the principle or sacrificing any of the advantages of this invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a mill of the class described, ahollow mortar having a bottom an annular mercurv groove or pocket, discharge openings leading from said groove a removable metal lining tub fitting within said mortar and having bottom discharge perforations communicating with said mercury groove or pocket, and a wabbling grinding cone or pestle arranged to roll inside of said lining tub, and resting on 2. In a mill of the class described, a stationarymortar containing a bottom amalgamatin g groove or pocket, an interior lining covering overthe top of said groove and having perforations communicating therewith, an amalgamating discharge for the mortar, and a heavy grinding cone or pestle for the mortar, arranged inside thereof and rolling on top of said lining, substantially as set forth.

3. In a mill of the class described, a stationary mortar having a bottom annular mercury groove or pocket, a sectional lining tub registering with the interior of the mortar and having imperforate sides and a series of bottom perforations communicating directly with the mercury groove or pocket, an amalgamated discharge for the mortar leading from the top edge thereof, and a heavy grinding cone or pestle wabbling inside of the mortar and on the perforated bottom of the sectional lining tub, substantially as set forth.

4. In a mill of the class described, a stationary mortar, having a bottom mercury groove or pocket, a sectional lining tub fitting the interior sides of the mortar and inclosing the bottom mercury groove or pocket, said tub having a bottom series of perforations opening into said mercury groove or pocket, a flanged hopper rim inclosing the top edge of the mortar and provided with a discharge opening at one side, an amalgamating discharge trough leading from said discharge opening, a water supply pipe, and a heavy grinding cone or pestle adapted to wabble inside of said lining tub, substantially as set forth.

5. In a mill of the class described, the combination with a stationary mortar and the grinding devices, of a hopper flange secured to the top edge of the mortar and having a screened discharge opening at one side, a parallel series of fender or guard rods arranged inside of the hopper in front of the screened discharge, a removable flow regulating gate arranged to work inside of the hopper over the screened discharge, and an amalgamated trough leading from the screened discharge, substantially as set forth.

6. In a mill of the class described, a stationary mortar, a hopper surrounding the upper edge of the mortar and having a screened discharge, a declining amalgamated copper discharge trough or chute leading from said discharge opening, an amalgamated float plate hinged inside of said trough or chute, and a wabbling or rolling grinding cone or pestle for themortar, substantially as set forth.

7. In a quartz mill, the combination of the grinding-devices and the discharge opening from the mill; of a declining amalgamated copper discharge trough or chute, and an amalgamated float plate hinged between the opposite sides of said trough or chute and provided at its movable end with a parallel series of downwardly curved fingers, those of one series being out of line with those of the other, substantially as set forth.

8. In a mill of the class described, the combination with the wabbling or rolling grinding cone or pestle having a stem, of a horizontal rotating crank wheel provided with a top face beveled on the arc of a perfect circle, and'a slot, and an adjustable crank sleeve or box having a bottom flange attachment plate adj ustably clamped on the beveled top face of said crank wheel over the slot therein and loosely receiving the upper end of said stem, substantially as set forth.

9. In a mill of the class described, the combination with the rolling grinding cone or pestle having a stem, and the gearing and bearings therefor; of a separate conical oil cup attached to and surrounding said stem intermediate of its ends, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two Witnesses.

THOMAS COOK MOOLEERY.

Witnesses:

O. 0. SMITH, D. O. GILBERT. 

